Related Clues:

• Throw one's hat in the ring
• Series
• Hysterical mood
• Flow like water
• Scamper
• 'War of the Worlds' outcome
• Part of RBI
• Head up
• Move fast
• Point on a diamond
• Lose control
• Emergency advice
• Unbroken string
• Perform a cowardly act
• Clue for 18-, 24-, 52- and 62-Across